Photoinduced Processes in Silicon Nanoparticles

Silicon nanocrystals have been prepared from gas‐phase pyrolysis and electrochemical etching of silicon. Confocal and wide‐field optical microscopy have been performed on size‐selected ensembles and single silicon nanocrystals. Single particles exhibit photoluminescence blinking effects that are int...

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Bibliographic Details
Published inIsrael journal of chemistry Vol. 44; no. 4; pp. 341 - 351
Main Authors Martin, JÖRg, Cichos, Frank, Chan, Iu Y., Huisken, Friedrich, Borczyskowski, Christian Von
Format Journal Article
LanguageEnglish
Published Weinheim WILEY-VCH Verlag 01.12.2004
WILEY‐VCH Verlag
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ISSN0021-2148
1869-5868
DOI10.1560/WBD9-DN73-KEHX-8DNL

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Summary:Silicon nanocrystals have been prepared from gas‐phase pyrolysis and electrochemical etching of silicon. Confocal and wide‐field optical microscopy have been performed on size‐selected ensembles and single silicon nanocrystals. Single particles exhibit photoluminescence blinking effects that are interrelated with photo‐induced (reversible) bleaching effects of the ensemble. The blinking dynamics follow a power law statistic of on‐ and off‐times, revealing that even single nanoparticles are subject to strong disorder effects. This is supported by optically detected magnetic resonance (ODMR) experiments on silicon nanoparticles achieved for the first time via microscopic techniques.
Bibliography:istex:AD264413CF53F856F4E5F86C24DB5543B3DAED83
DFG
ArticleID:IJCH5680440402
ark:/67375/WNG-5T83M75F-F
ISSN:0021-2148
1869-5868
DOI:10.1560/WBD9-DN73-KEHX-8DNL